Fluid-actuated apparatus to control motor speed



Aug. 27, 1963 H. J. OLSON 3,101,670

FLUID-ACTUATED APPARATUS TO CONTROL MOTOR SPEED Filed June 8, 1961INVENTOR.

1 3,101,670 FLUID-ACTUATED APPARATUS T CONTROL MOTOR SPEED Harold J.Olson, Broadway, Raynham, Mass. Filed June 8, 1961, Ser. No. 115,810 5Claimsr (Cl. 10317) This invention relates to apparatus, actuated by afluid, whereby the speed of a motor can be controlled.

One object of my invention is to provide such apparatus havingvacuum-creating means operably connected to a vacuum-operated, controlmember and throttle-control mechanism, and having restricting means in avacuum-conduit line whereby the vacuum therein can be controlled to afine degree.

Another object is to provide such apparatus having said restrictingmeans, with a vacuum breaker, the restricting means being so set that ithas at least a minimum opening that is sufflcient to permitestablishment of a vacuum that can overcome the effect of air enteringsaid line through the vacuum breaker.

A further object is to provide parts that form said apparatus and to soop e'rably arrange them that the installation of my apparatus in anautomobile truck power mechanism, or the like, is relatively simple andinexpensive.

The foregoing and other objects which will appear as the nature of theinvention is better understood, may be accomplished by a construction,combination and operative arrangement of parts such as is disclosed bythe drawing. The nature of the invention is such as to render itsusceptible to various changes and modifications, and, therefore, I amnot tobe limited to the construction disclosed by the drawing nor to theparticular parts described in the specification; but am entitled to allsuch changes therefrom as fall within the scope of my claims. 1

In the drawing:

FIG. 1 is a diagrammatic view showing my apparatus operably connected toa fluid-actuated device that operates without an electric circuit.

' As illustrated, my throttle control apparatus has a fluid-actuated,magnet device 12 responsive to fluid flow having a passage therein andthat is operably connected to a fluid discharge conduit 14 communicatingwith a pump 15 and such as disclosed in my Patent No. 2,842,150, datedJuly 8, 1958. Communicating with said device 12 is a conduit 16 thatcommunicates with the usual vacuum-creating means having a manifold 18of an internal combustion motor of an auto truck.

In order to control the degree of vacuum in said conduit 16 I provide avacuum restricting valve 20 therefor having the usual control mechanism21 and having a lower opening 22 on the manifold side thereof whichopening is closed when the valve is shut off. Said valve 29 also has anupper opening 24, on the device side thereof. This restricting valve 26is used to control the speed of the pumping operation, as laterexplained.

A conduit 26 communicates with a vacuum breaker 28 which permitssufficient air to pass into said conduit 26 to break the vacuum when thepumping operation ceases thus relieving pull on a control diaphragm 36and an arm 4-2 later described. This vacuum breaker 28 has a filter 30and an open dust cover 32. Said conduit 26 continues preferably as aflexible hose 26a that communicates with a vacuum-operated member suchas a control diaphragm 36 that is mounted on a bracket 38 and to whichthrottle control mechanism 4% is operably attached, having an anm 42extending therefrom that is attached to a bead chain 4- 3. The latter isattached to a connector 46 to which is connected a throttle rod 48extending to a carburetor 50 that governs the supply of asoline or otherfuel to an internal combustion motor.

When oil, 'ior instance, is pumped by the motor, from a supply tank to aplace of use, such as a heating apparatus storage tank, thefluid-actuated device 1'2 is actuated to thereby establish communicationthrough the passage in the latter, through said conduits 16 and 26 andsaid manifold 18. Thus said vacuum operated member 36 is actuated andthereby said throttle controlmechanism 46. This automatically speeds upthe motor which accelerates the pumping operation.

Inasmuch as the number of gallons per minute that can valve 20 in saidconduit 26 which can vary the degree of vacuum in the latter.

Since my apparatus is used by those unfamiliar with the details of itsmode of operation, said restricting valve 24) is preferably so regulatedas to always be open suificien-t-ly so that the vacuum established inthe passages in my apparatus will be sufiicient to overcome the effectof said vacuum breaker. This makes certain that the throttle controlmechanism can be actuated to some degree when my apparatus becomesoperative.

What I claim is: I

1. Fluid-actuated apparatus to control motor speed comprising a motor,fluid-pumping means connected ,to said motor, fluid flow responsivevalve meanscommunieating with .said pumping means, vacuum-creatingmeans, a first conduit communicating with said valve means and Saidvacuum-creating means, a vacuum-operated control member, a secondconduit communicating with the latter and with said valve means,governing means for said vacuum-creating means, throttle-controlmechanism operably connected to said motor and to saidgoverning meansand operably connected to said vacuum-operated member whereby Saidmechanism is adapted to be actuated by said latter member, a restrictingvalve connected to said first conduit adapted to regulate the degree ofvacuum in said first conduit, and a vacuum breaker communicating withsaid second conduit and adapted to introduce air into said secondconduit, said valve means being responsive to the flow of fluid fromsaid pumping mews whereby the degree of vacuum in sm'd first conduit canbe controlled by said restricting valve.

2. Fluid-actuated apparatus to control motor speed comprising a motor,fluid pumping means connected to said motor, fluid flow responsive valvemeans having a passage therein, communicating with said pumping means,vacuum-creating means, a first conduit communicating with said valvemeans passage and said vacuumcreating means, a vacuum-operated controlmember, a second conduit communicating with the latter and with saidvalve means passage, governing means for said vacuum-creating means,throttle-control mechanism operably connected to said motor and to saidgoverning means and operably connected to said vacuum-operated memberwhereby said mechanism is adapted to be actuated by said latter member,a restricting valve connected to one of said conduits adapted toregulate the degree of vacuum therein, and a vacuum breakercommunicating with one of said conduits and adapted to introduce airinto the latter, said valve means being responsive to the flow of fluidfrom said pumping means whereby the degree of vacuum in said firstconduit can be controlled by said restricting valve.

3. Fluid-actuated apparatus to control motor speed comprising a motor,fluid pumping means connected to said motor, fluid flow responsive valvemeans communicating with said pumping means, vacuum-creating means, afirst conduit communicating with said valve means and saidvacuun1-creating means, a vacuum-operated control member, a secondconduit communicating with the latter and with said valve means,governing means for said vacuum-creating means, throttle-controlmechanism operably connected to said motor and to said governing meansand operably connected :to said vacuum-operated member whereby saidmechanism is adapted to be actuated by said latter member, a restrictingvalve connected to one of said conduits adapted to regulate the degreeof Vacuum therein, and a vacuum breaker communicating with one of saidconduits and adapted to introduce air into the latter, said restrictingvalve being so regulated that 'in its most restricted position thevacuum established therethrough is suflicicnt 'toovercome the effect ofair passing to the flow of fluid from said pumping means whereby thedegree of vacuum in said first conduit can be controlled by saidrestricting valve.

4. Fluid-actuated apparatus to control motor speed comprising a motor,fluid pumping means connected to said motor, fluid flo-W responsivevalve means having a passage therein communicating with said pumpingmeans, vacuum-creating means, a first conduit communicating with saidvalve means passage and said vacuum-creating means, a vacuum-operatedcontrol member, a second conduit communicating with the latter and withsaid valve means, governing means ior said vacuum-creating means,throttle-control mechanism operably connected to said motor and to saidgoverning means and operably connected to said vacuum-operated memberwhereby said mechanism is adapted to be actuated by said latter memher,a restricting valve connected to said first conduit adapted to regulatethe degree of vacuum in said first a portion of said first conduit andwith said vacuum-creating means and having an upper openingcommunicating with a portion of said first conduit and said passage insaid valve means, said valve means being responsive to the flow of fluidfrom said pumping means whereby the degree of vacuum .in said firstconduit can be controlled by said restricting valve.

5. Fluid-actuated apparatus to control motor speed comprising a motor,'fluid pumping means connected to said motor, fluid flow responsivevalve means communicating with said pumping means, vacuum-creatingmeans, a vacuum-operated control member, conduit means communicatingwith said valve means,-said vacuum-creating means, and saidvacuum-operated member, governing means for said vacuum-creating means,throttle-contnol mechanism operably connected to said governing meansand operably connected to said vacuum-operated member whereby saidmechanism is adapted to be actuated by said latter member, a restrictingvalve operably connected to said conduit means adapted to regulate thedegree of vacuum in the latter, and a vacuum breaker communicating withsaid conduit means and adapted to introduce air into the latter, saidvalve means being responsive to the flow of fluid from said pumpingmeans whereby the degree of vacuum in said conduit means can becontrolled by said restricting valve.

RoWell Apr. 14, 1953 Jahnel July 30, 1957

1. FLUID-ACTUATED APPARATUS TO CONTROL MOTOR SPEED COMPRISING A MOTOR,FLUID PUMPING MEANS CONNECTED TO SAID MOTOR, FLUID FLOW RESPONSIVE VALVEMEANS COMMUNICATING WITH SAID PUMPING MEANS, VACUUM-CREATING MEANS, AFIRST CONDUIT COMMUNICATING WITH SAID VALVE MEANS AND SAIDVACUUM-CREATING MEANS, A VACUUM-OPERATED CONTROL MEMBER, A SECONDCONDUIT COMMUNICATING WITH THE LATTER AND WITH SAID VALVE MEANS,GOVERNING MEANS FOR SAID VACUUM-CREATING MEANS, THROTTLE-CONTROLMECHANISM OPERABLY CONNECTED TO SAID MOTOR AND TO SAID GOVERNING MEANSAND OPERABLY CONNECTED TO SAID VACUUM-OPERATED MEMBER WHEREBY SAIDMECHANISM IS ADAPTED TO BE ACTUATED BY SAID LATTER MEMBER, A RESTRICTINGVALVE CONNECTED TO SAID FIRST CONDUIT ADAPTED TO REGULATE THE DEGREE OFVACUUM IN SAID FIRST CONDUIT, AND A VACUUM BREAKER COMMUNICATING WITHSAID SECOND CONDUIT AND ADAPTED TO INTRODUCE AIR INTO SAID SECONDCONDUIT, SAID VALVE MEANS BEING RESPONSIVE TO THE FLOW OF FLUID FROMSAID PUMPING MEANS WHEREBY THE DEGREE OF VACUUM IN SAID FIRST CONDUITCAN BE CONTROLLED BY SAID RESTRICTING VALVE.